E24 indicates a drainage problem. It does not tell you which part to buy. This page explains what the code narrows down and what still has to be measured.
A drain error is a statement about a result, not a component. Bosch's own owner support associates this condition with drainage being obstructed and lists candidates including a blocked pump or an unsecured pump cover, a kinked drain hose, and a clogged air gap. Those are places to look.
Be precise about which code appeared: E15 concerns leak protection and is a separate condition. The pattern matters as much as the code — never draining, draining sometimes, water at the sink or air gap, or a fault that began after plumbing work each point elsewhere. KONGRA LLC is independent and is not affiliated with, endorsed by or authorized by Bosch; diagnosis is a paid on-site visit followed by a written estimate.
These are categories to narrow the question before a visit, not a remote diagnosis. Confirmation requires on-site measurement.
Visual observation only, with the machine off. Follow your own model's manual for the routine maintenance it describes.
The more of this arrives up front, the more useful the first visit is.
This machine stopped during cycles and cleaned and dried poorly. Glass and plastic debris were found and removed from the filter and drain path, and a separate door-closing and latch problem was identified, with latch work recommended. This record does not document an E24 code, and it is not claimed that the cleaning and drainage symptoms all resolved with the latch work.
No. Bosch's published guidance associates the code with drainage being obstructed and lists possibilities such as a blocked pump or loose pump cover, a kinked drain hose, or a clogged air gap. It narrows where to look, not which part to replace.
No. E15 relates to the leak-protection system and is a different condition with different handling. Record the exact code shown along with what you observed.
Either is possible and both are assessed: the machine has to pump, and the hose, air gap and household drain have to accept the water.